Murmansk vs metropolis

Murmansk and metropolis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Murmansk	Yes	No	No	No
metropolis	Yes	No	No	No

Murmansk (noun)	metropolis (noun)
a port city in northwestern Russia on the Kola Peninsula; the largest city to the north of the Arctic Circle; an important supply line to Russia in World War I and World War II	people living in a large densely populated municipality
	a large and densely populated urban area; may include several independent administrative districts